Spring Loaded Steam Safety Relief Valve

Spring Loaded Steam Safety Relief Valve is used in power plant boilers,pressure containers and temperature reducing devices and other facilities.It serves to prevent pressure from exceeding max. allowed value and ensure the safety of the device during working.Steam Safety Valve sizing and selection acc.to API 520(ASME secⅧ),designed acc.to API 526,test acc.to API 527(ASME PTC 25),flange acc.to ASME B16.5. This valve’s type include A48C Open Bonnet Plain Lever Safety Valve,A48Y High Temperature and High Pressure With Radiator Safety Valve,High Performance Steam Safety Valve which meets the requirement of ASME secⅠ,High Temperature High Pressure Welded Safety Valve.

Spring Loaded Steam Safety Relief Valve

Features:

Open Bonnet ,with radiator
Safety Valves/pressure safety valves, angle type
Low/Full lift safety valve for high temperture and high pressure condition metal to metal seated,with lever,
Inlet: Flanged connection acc.to ASME,DIN,JIS,BS etc.
Outlet: Flanged connection acc.to ASME,DIN,JIS,BS etc.

Applications:

Spring Loaded Steam Safety Relief Valve is applicable as the pressure protecting device in the equipment or pipelines for steam, air,etc., which the working medium is ≤350℃.

Standards Compliance:

Design and Manufacture:API RP 520

Face to Face(end to end):API 526

Test and Inspection:API 527

Model/Types:

spring loaded low lift open bonnet safety relief valve with lever(A47)
spring loaded Full lift open bonnet safety relief valve with lever(A48)

In order to offer a quotation,we need specifications as following:

Flange Connection standard
Pressure Rating
Size
Set Pressure
Material for Body&Trim (Material for inside parts).
Medium
Working Temperature

Main property specification

Nominal Pressure	PN(Class)	150	300	600
Body strength	Ps(Mpa)	3.0	7.5	15
Set pressure	Pk(Mpa)	0.1-2	1.6-5	3.2-10
Seal pressure	Pm(Mpa)	90%Pk
Reseation pressure	Ph(Mpa)	≥90%Pk
Relieving Pressure	Pp(Mpa)	≤1.03Pk
Lift height	H(mm)	≥1/4 d0
Appropriate temp.	≤350℃
Appropriate Medium	Steam

Code of throat diameter

Code	Diameter	Code	Diameter
D	10	L	50
E	13	M	55
F	16	N	60
G	20.5	P	72
H	26	Q	96
J	33	R	115
K	40	T	148

Spring Loaded Steam Safety Relief Valve Materials list

No	Name of part	Materials
1	Body	WCB	CF8	CF8M
2	Nozzle	2Cr13/ 304	CF8	CF8M
3	Adjusting Ring	2Cr13/ 304	304	316
4	Disc	2Cr13/ 304	304	316
5	Guide sleeve	2Cr13/ 304	304	316
6	Bonnet	WCB	CF8	CF8M
7	Spring	50CrVA	50CrVA coated teflon	50CrVA coated teflon
8	Stem	2Cr13	304	316
9	Adjusting bolt	45	2Cr13	2Cr13
10	Cap	ZG200-400	ZG200-400	ZG200-400

Sealing surface of material "H" depositing D507, "Y" depositing stellite

Drawing For Example:

Spring Loaded Steam Safety Relief Valve

For more details, please download catalogue for reference or contact with us.

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Spring Loaded Steam Safety Relief Valve